Deep learning algorithms for human activity recognition using mobile and wearable sensor networks: State of the art and research challenges

HF Nweke, YW Teh, MA Al-Garadi, UR Alo - Expert Systems with …, 2018 - Elsevier
Human activity recognition systems are developed as part of a framework to enable
continuous monitoring of human behaviours in the area of ambient assisted living, sports …

Data fusion and multiple classifier systems for human activity detection and health monitoring: Review and open research directions

HF Nweke, YW Teh, G Mujtaba, MA Al-Garadi - Information Fusion, 2019 - Elsevier
Activity detection and classification using different sensor modalities have emerged as
revolutionary technology for real-time and autonomous monitoring in behaviour analysis …

A riemannian network for spd matrix learning

Z Huang, L Van Gool - Proceedings of the AAAI conference on artificial …, 2017 - ojs.aaai.org
Abstract Symmetric Positive Definite (SPD) matrix learning methods have become popular in
many image and video processing tasks, thanks to their ability to learn appropriate statistical …

SPD manifold deep metric learning for image set classification

R Wang, XJ Wu, Z Chen, C Hu… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
By characterizing each image set as a nonsingular covariance matrix on the symmetric
positive definite (SPD) manifold, the approaches of visual content classification with image …

First-order methods for geodesically convex optimization

H Zhang, S Sra - Conference on learning theory, 2016 - proceedings.mlr.press
Geodesic convexity generalizes the notion of (vector space) convexity to nonlinear metric
spaces. But unlike convex optimization, geodesically convex (g-convex) optimization is …

Log-euclidean metric learning on symmetric positive definite manifold with application to image set classification

Z Huang, R Wang, S Shan, X Li… - … conference on machine …, 2015 - proceedings.mlr.press
Abstract The manifold of Symmetric Positive Definite (SPD) matrices has been successfully
used for data representation in image set classification. By endowing the SPD manifold with …

Research on mobile impulse purchase intention in the perspective of system users during COVID-19

W Zhang, X Leng, S Liu - Personal and Ubiquitous Computing, 2023 - Springer
COVID-19 has caused a serious impact on the global economy. Effectively stimulating
consumption has become a momentous mission in responding to the impact of the …

Kernel methods on Riemannian manifolds with Gaussian RBF kernels

S Jayasumana, R Hartley, M Salzmann… - IEEE transactions on …, 2015 - ieeexplore.ieee.org
In this paper, we develop an approach to exploiting kernel methods with manifold-valued
data. In many computer vision problems, the data can be naturally represented as points on …

Kernel methods on the Riemannian manifold of symmetric positive definite matrices

S Jayasumana, R Hartley, M Salzmann… - proceedings of the …, 2013 - cv-foundation.org
Abstract Symmetric Positive Definite (SPD) matrices have become popular to encode image
information. Accounting for the geometry of the Riemannian manifold of SPD matrices has …

From manifold to manifold: Geometry-aware dimensionality reduction for SPD matrices

MT Harandi, M Salzmann, R Hartley - … 6-12, 2014, Proceedings, Part II 13, 2014 - Springer
Representing images and videos with Symmetric Positive Definite (SPD) matrices and
considering the Riemannian geometry of the resulting space has proven beneficial for many …